Vacuum-sealing preserving-jar.



` No. 63u32.` Patented Aug. 20, Ism. armaron.

"VCUUMSEALING PBESERVING JAR.

(Application med Nov. s, 1900.)

(No Model.)

V//TNES SEG# JN WE1/v Tof? ing-ring.

UNITED STATES` PATENT OEEIC'E.

EDWIN NORTON, OF MAYWOOD, ILLINOIS', ASSIGN OR TO THE AUTOMATIC VACUUM CANNING COMPANY, OF CHICAGO, ILLINOIS.

VACUlJM-SEALING` PRESERVING-JAR.

SPECIFICATION forming part of Letters Patent No. 681,132, dated August 20, {1901.} I l Application filed November 3, 1900. Serial No. 35,320. (No model.)`

Be it known that I, EDWINNORTON, a citi- `zen of the United States, residing in Maywood, in the county of Cook and State oflllinois, have invented a new and useful Improvem ent in `Vacu um Sealing Preserving- Jars, of which thefollowing is a specification.

`My invention relates to improvements in preservin g-j ars.

It consists of a glass lor earthenwarejar having a sheet-metal seaming-ring hermetic- Q ally sealed and secured thereto and a cover hermetically sealed and secured to the seam- In practice the cover is hermetically sealed to the scanning-ring after the jar hasbeen `filled with the goods to be preserved and while a vacuumis maintained therein, so that the `atmospheric pressure serves to additionally secure the cover on the jar.

In the accompanyingdrawings, forming a part of this specification,Figure lis a central sectional view of a preserving-jar embodying my invention, showing the cover loosely in place thereon for exhausting the air from the jar through its open mouth. Fig. 2 is a similar 'view showing the jar with the cover hermetically sealed and secured to the seamingthe top thereof.

B is a sheet-metal seaining-ring having an internal shoulder Z7 and hermetically sealed and secured to the jar Abya packing-ring C and an inturned flange b at the lower edge of the ring, which locks the ring on the jar and forcibly clamps and compresses the packing-ring C between the opposing shoulders on the jar and seamingring. The seaminglring B has at its upper edge a iange or roll b2, forming a smooth seat or bearing for compressing the packing F, fitting in or on the packing-seat d, with which the cover D is furnished to receive it. The packing-seat d in or on the sheet-metal cover D may preferablyibe formed by inner and outer iianges d forming a tight frictional fit therewith, which l serves to mechanically lock, seam, or secure the cover on and to the scanning-ring and to hold the packing F firmly compressed, thereby forming and maintaining a hermeticallytight joint between the cover and seamingring. This mechanical or frictional fit joint or seam between the cover and packing-ring is, however, further reinforced by the vacuum or atmospheric seal produced by placing the jar in the receiver of an air-pump and exhausting the air therefrom before the cover D is forced home or the packing compressed between the cover and the scathing-ring, so that the atmospheric pressure on the vacuumsealed jar will also serve to hold the cover in place and clamp and compress the packing between the cover and scathing-ring.

G and g are protecting-disks, the disk g being preferably of thin oiled or parafned paper and the disk G of wood or paper-pulp board. These disks rest on the fiat end face a of the jar-neck and serve to protect the contents of the jar from contact with the metal cover and seaming-ring. The collapsing or downward curvature of the sheetmetal cover, due to the vacuum in the jar and the atmospheric pressure on the outside 0f the jar, causes the cover at its center por- `tion toA press against these protecting-disks and to hold them in place.

To open the jar, a penny or other flat instru ment is inserted between the roll,I flange, or shoulder d3 at the lower edge of the outer flange cl2 of the cover and the shoulder or flange b of the seaming-ring, and the cover may thus be pried off against the vacuum or atmospheric pressure seal or joint and the mechanical or frictional fit joint between the flanges of the cover and the roll at the upper edge of the seaming-ring.

In the modification illustrated in Fig. 3 the cover D has only the inner fiange d'and its outer edge or rim is folded into a double seam with the flange h2 at the upper edge of' the seaming-ring, thus forming a mechanical lock or seam between the cover and seamingring of great strength and rigidity. By this construction the seaming-ring is hermetically sealed and confined or secured to the jar at IDO the factory and then the user after filling the jar has lonly to apply the cover to the `seaming-ring, thus avoiding all danger of breaking the filled jar and loss of contents by attempting to crimp or apply -a ring thereto after it is filled.

I claim- 1. The combination witha jar having an external shoulder at its neck or top of a sheetmetal seaming-ring hermetically sealed and secured to the jar, and a cover hermetically sealed andisecured to the seaming-ring, said cover being hermetically sealed and secured to the seaming-ring by a vacuum` or atmospheric-pressure seal collapsing or inwardly curving the cover and also by a mechanical or frictional t joint, substantially as specified.

2. The combination with a jar havingan external shoulder on its neck or top, of a sheetmetal seeming-ring having an internal shoulder, a packing fitting between said shoulders, an inturned flange on the lower edge of the seaming-ringlocking the same to the jar, compressing the packing and hermetically sealing the ring to the jar, a cover having a packing-'seat and packing and a ange on theupper edge of the seamingring forming a smooth shoulder for com pressingthe packing between the coverand the ring, substantially as specified.

3. The combi-nation with a jar 'having an external shoulder on its neck of a seaniingring having an internal shoulder, a packing between said shoulders on the jar and ring, an inturned flange at the lower edge of the scathing-ring locking the saine tothe jar,

compressing the packing and hermetically sealing the ring to the jar, a roll on the upper edge -of the seaming-ring, a tight frictional it cover having inner and outer flanges embracing said roll on the seaming-rin g, and a packing `between the-cover and seamingring, substantially as speoiiied.

4. The combination with a jar having anv external shoulder at its neck or top of a sheetmetal seaming-ring hermetically sealed and secured to the jar, and a coverhermetically sealed and secured to the seaming-ring, and a protecting-disk between the "upper end of the jar and the cover, said cover being hermetically sealed and secured to the seamingring by a vacuum or atmospheric-pressure seal collapsing or inwardly curvingthe cover and also by a mechanical or frictional fit joint, substantially as specified. K

5. The ,combination with a jar having an external shoulder on its neck or top,ofa sheetmetal 'seaming-ring having an internal shoulder, a packing fitting between said shoulders, an inturned flange on the lower edge of the seaming-ring locking the same to the jar, compressing the packing and hermetically sealing the ring to the jar, a cover having a packing-seat and packing anda [lange on the upper 'edge of the seaming-ring forming-a smooth shoulder for compressing the packing between the cover and the ring, and a protecting-disk on the upper end of the jar between it and the cover, substantially as specified.

G. The combination with a jar having an external shoulder on its neck of a seamingring having an internal shoulder, a packing between said shoulders on the jar and ring, 'an inturned flange at the lower edge of the seaming-ring locking the same to the jar, compressing the packing and hcrmetically sealing the ring to thejar, a roll on the upper edge of the seaming-ring, a tight frictional fit cover having inner and outer anges ernbracing said roll on the seaming-ring, and a packing between the. cover and seaming-ring, the outer ange of the cover having a roll or shoulder at its lower edge to enable it to be pried 01T against the shoulder on the ring and jar, substantially as specified.

EDWIN NORTON. NVitnesses:

EDMUND ADoooK, L. E. CURTIS. 

